2003/10/28 by B. Rosenstein, Tran Minh-Tien
Materials Science · Physics and Astronomy · #Organic and Molecular Conductors Research #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.dis-nn
paper · pdf · doi:10.1103/physrevb.68.245321
published as Phys. Rev. B 68, 245321 (2003) · to appear in Phys. Rev. B
arxiv created 2003/10/28 · openalex publication_date 2003/12/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The interrelation between disorder and interactions in two-dimensional electron liquid is studied beyond weak-coupling perturbation theory. Strong repulsion significantly reduces the electronic density of states on the Fermi level. This makes the electron liquid more rigid and strongly suppresses elastic scattering off impurities. As a result the weak localization, although ultimately present at zero temperature and infinite sample size, is unobservable at experimentally accessible temperature at high enough densities. Therefore practically there exists a well-defined metallic state. We study diffusion of electrons in this state and find that the diffusion pole is significantly modified due to ``mixture'' with static photons similar to the Anderson-Higgs mechanism in superconductivity. As a result several effects stemming from the long-range nature of diffusion such as the Aronov-Altshuler logarithmic corrections to conductivity are less pronounced.